Construction technique of wet shotcrete for tunneling with TBM in watery section;

Based on the selection of the accelerating agents for the wet shotcrete,the applicability of the setting time for the accelerating agents got from the tests concerned are discussed herein,from which a proposal is put forward that the alkali-free accelerating agent is suggested to be preferentially applied to the wet shotcrete for the permanent project.

In view of development of national economy and environmental protection, necessity of researching wet shotcrete technology is discussed in this paper based on rebound reduction, dust reduction and construction quality of wet shotcrete.

Mesomechanics analysis is adopted to analyze the effects of pore water pressure,which has close relation not only with the volumetric deformation of concrete,but also with the developing velocity of cracks,on the mechanical properties of wet concrete.

Application of steel fiber wet-shot concrete technique in tunnel construction;